Her dad, Chris Everest, posted a picture of his daughter on Facebook and pleaded: “Caroline Everest please come home safely”.

Detective Chief Inspector Victoria Short, the Senior Investigating Officer, said: “I would like to say thank you on behalf of Caroline’s family and South Yorkshire Police to the overwhelming public response we have had throughout the investigation so far.

Hunt: Police search for the missing student after she failed to turn up to work and later a family dinner (Image: PA)

“This is an incredibly difficult time for Caroline’s family and I would ask that the media respect their privacy.

“The investigation is still ongoing and we are urging anyone who saw Caroline on the night she disappeared to come forward.

“Her picture has been widely circulated and if you saw her on that night please get in touch. Any information, no matter how small, could help us piece together her final steps to bring some closure to her family."

Found: Caroline Everest was spotted on CCTV outside a pub with a man but they parted ways 10 minutes later (Image: PA)

Tributes: Caroline had not been seen since the early hours of Sunday (Image: PA)

Speaking yesterday, DCI Short said that the teenager had been seen on CCTV with a man outside a pub but they part ways about 10 minutes later.

She said: “Officers have trawled through hours of CCTV footage to trace Caroline’s last steps to begin to understand what happened that night.

“CCTV tells us that Caroline left the Corporation nightclub on Milton Street at around 2.40am on Sunday.

Tragic: The teenager's death is still being investigated and is being treated as 'unexplained' (Image: Facebook)

“A minute later, she is seen with a man outside the Devonshire Cat pub. At 3.35am, CCTV shows them parting company on Napier Street in Sharrow.

“Approximately ten minutes later, Caroline is seen alone on Summerfield Street, walking in the direction of the river. This is the last we see of her.

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“We have carried out extensive enquiries in a bid to identify and locate the man in the earlier CCTV footage.

“The investigation is ongoing and we continue to review CCTV footage from the information received from the public."

Please call police on 101 quoting incident number 998 of 22 November. Alternatively, Crimestoppers can be called anonymously on 0800 555111.

Search: A police officer looks through a bin as part of the hunt after a post-mortem examination came back inconclusive (Image: Ross Parry)